the research analyzes the factors that influence farmers'dietary quality level in poor regions of our country with the multiple regression method . the result shows that income and food consumption have a great influence on farmers'dietary quality level, and family scale and education level are the secondly factors, which act from the consumption structure and consumption ideas points respectively 采用多元回归的方法对我国贫困地区农村居民膳食质量水平的影响因素进行了分析,结果表明,收入水平和食物消费水平对我国贫困人口膳食质量水平影响显著;其次是家庭规模和劳动力受教育程度,这2个因素主要从食物消费结构和消费观念的角度对我国贫困地区膳食质量水平产生正面影响。
in order to increase prediction accuracy of development blocks with short production history, this paper introduces multiple regression method through three following aspects : prediction of decline index and initial decline rate; prediction of annual decline rate; prediction of injection-production ratio 为了提高生产历史较短开发区块的预测精度,从3个方面研究介绍了该方法的应用情况:一是预测递减指数和初始递减率;二是预测年对年自然递减率;三是预测油田注采比。
after synthetically analyses and researches of the existing methods for injection allocation rate, this article takes the group of water-injecting wells in waterflood oilfield as the research unit, the multiple regression method to decide the injection allocation rate is applied, by which and its regression coefficient and partial correlation coefficient, the multivariate regression models of model and model are developed 在对目前存在的配注方法的综合分析和研究之后,提出以水驱油田注水井井组为研究单元,采用多无回归方法来确定注水井井组配注量,并基于多元回归方法的回归系数和偏相关系数,分别建立了多元回归模型、。